کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5413475 1506626 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Excess molar volumes and excess viscosities for mixtures of N,N-dimethylformamide with methanol, ethanol and 2-propanol at different temperatures
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Excess molar volumes and excess viscosities for mixtures of N,N-dimethylformamide with methanol, ethanol and 2-propanol at different temperatures
چکیده انگلیسی
Densities and viscosities for mixtures of N,N-dimethylformamide (DMF) with methanol, ethanol, and 2-propanol were measured as a function of mole fraction at (303.15, 308.15, 313.15, 318.15, 323.15) K and atmospheric pressure. From the measurements, excess molar volumes (VmE), excess viscosities (ηE), and Grunberg and Nissan interaction parameters (ɛ) were calculated. The excess parameters were fitted to the Redlich-Kister equation. Excess molar volumes (VmE) were found to be negative throughout the whole range of composition for all the three systems. The excess viscosities and interaction parameters of the DMF + methanol system were found to be positive whereas the values were negative for the other systems over the entire concentration range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 138, Issues 1–3, 15 February 2008, Pages 139-146
نویسندگان
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